Nazare Big Wave Challenge Gets Yellow Alert, Could Run Saturday in Giant Waves
70-foot plus waves predicted for Portuguese big wave tow surfing competition.
Surf Forecasts:
Monument surfForecast / SA – Eyre Peninsula / Australia
48hr Weather and Surf, issued 9 pm Tuesday 16 Dec 2025 ACDTForecast update in hr min s Forecast update imminent
Monument surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Monument sea temperature is
18.4° C
(Which is slightly warmer than usual)How big are the waves at Monument today?
The current surf forecast for Monument at 1AM is: 0.7m 11s primary swell from a Southwest direction and 0.7m 10s secondary swell from a South direction (forecast issued at 09:30pm December 16). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 2.
| Time (ACDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | 2ft (0.6m) | 11s |
| Afternoon (17 Dec) | 1.5ft (0.4m) | 15s |
| Evening (17 Dec) | 1.5ft (0.5m) | 14s |
Table - waves today at Monument. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tue 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |   |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 11 | 11 | 11 | 11 | 11 | 11 | 15 | 15 | 15 | 14 | 14 | 14 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 283 | 233 | 119 | 96 | 86 | 80 | 77 | 77 | 75 | 128 | 155 | 149 | 140 | 128 | 200 | 203 | 241 | 238 | 224 | 212 | 208 | 208 | 138 | 134 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- off | off | off | off | cross- off | on | cross- on | cross | cross- off | off | off | cross- off | cross | on | cross- on | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 12:20AM 0.98 | 12:06PM 0.47 | 12:48AM 1.06 | 12:39PM 0.48 | 1:17AM 1.12 | 1:08PM 0.49 | ||||||||||||||||||
Low Tide / height (m) | 4:58PM 0.19 | 7:31AM 0.26 | 5:33PM 0.15 | 7:58AM 0.22 | 6:05PM 0.11 | 8:26AM 0.19 | ||||||||||||||||||
Tue 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 6:11 | - | - | - | - | - | - | - | 6:11 | - | - | - | - | - | - | - | 6:11 | - | - | - |
| Sunset | 8:36 | - | - | - | - | - | - | - | 8:37 | - | - | - | - | - | - | - | 8:37 | - | - | - | - | - | - | - |
 |  | | | | | | | | | | | | | | | | | |  |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 28 | 22 | 21 | 21 | 23 | 31 | 31 | 30 | 30 | 28 | 26 | 25 | 27 | 36 | 34 | 23 | 26 | 25 | 19 | 17 | 17 | 18 | 17 | 16 |
| Feels °C (?) | 24 | 16 | 17 | 17 | 18 | 25 | 25 | 24 | 24 | 23 | 21 | 19 | 21 | 30 | 28 | 19 | 22 | 22 | 17 | 14 | 13 | 14 | 12 | 10 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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